stronq



(No Model.) 3 Sheets-Sheet 1. P. S. STRONG.

SOLE LEVELING MACHINE.

No. 403,495. Patented May 14, 1889.

WITNEEEEE- Rh/ENTER- Zmw/. WM @zwx was (No Model.) 3 Sheets-Sheet 3. P. S STRONG.

SOLE LEVELING MACHINE.

No. 403,495. Patented May 14, 1889.

WITNEEEEE- INA/EMT DR.

44% WW M44 W 3 UNITED STATES PATENT OFFICE.

FREDERICK S. STRONG, OF EAST BRIDGEIVATER, MASSACHUSETTS, ASSIGNOR TO THE CARVER COTTON GIN COMPANY, OF SAME PLACE.

SOLE-LEVELING MACHINE.

SPECIFICATION forming part of Letters Patent No. 403,495, dated May 14, 1889.

Application filed December 24, 1888. Serial No. 294,524. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK S. STRONG, of East Bridgewater, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Sole-Leveling Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

The object of my invention is to so improve the construction of sole-leveling machines as to insure a more even pressure of the pressure or leveling roll on all parts of the sole, and also to so arrange the parts that, although the extreme end of the toe of the sole will receive the full pressure, the movement of the pressure-roll is so guided that it cannot injure this part by abruptly leaving it or by striking it on the return-stroke.

My invention also relatesto some of the minor devices of the machine, which may be best understood by reference to the drawings and specification. These objects I attain by the mechanism shown in the accompanying drawings, in which--- Figure l is a side elevation of a levelingmachine with my improvement embodied.

Fig. 2 is a view showing most of the parts in side elevation and some in longitudinal vertical section. Fig. 3 is a plan showing a device for reversing the motion of the shoeholding jack. Fig. at is a view in elevation and section showing a device connected to the reversing-lever for the purpose of holding the reversinglever in such a position that the jack will remain stationary. Fig. 5 is a plan showing the leveling roller and its adjuncts. Fig. 6 is a View showing, partly in elevation and partly in section, the device by which a spring or yielding pressure is brought to bear on the leveling-roller. Fig. 7 is a diagram intended to illustrate the operation of the leveling-roller in relation to the shoe.

In the drawings, Figs. 1 and 2, A represents the frame of the machine, and B, Figs.

1, 2, and 3, the main shaft of the machine, which has upon it fast and loose pulleys (see Fig. 3) for connecting it with the motive power.

B, Fig. 1, is a balance-wheel attached to the main shaft 13. This wheel B has upon it (see Fig. 1) ways 13 in which a crank-pin plate, 13, is adapted to slide and to be fixed at any desired position by suitable set-screws. Upon the plate B I have a crank-pin, B", which as the wheel B rotates gives motion to the link B, which in turn moves the arm B attached to the rocker-shaft B From the rocker-shaft B arms B extend, Figs. 2 and 5, and are connected at their tops by pins B to links 13 The links B B, Fig. 5, have at their outer ends holes through which the shaft B passes. The shaft B carries the leveling-roller B and is guided by sliding boxes 13 B, in which its ends rest. The boxes B 13 slide in ways I) I), made on the inner faces of the frame C.

The frame C swings on pins C in the frame A, Figs. 1 and 2. Pressure is exerted on the frame C, and through it onto the leveling roller B, by means of rods 0* and the footlever 0 To obtain an adjustable yielding tension on the frame C, I have the following described device, (see Figs. 2 and 5:)

C is a swiveling cross-bar, the ends of which are attached to the frame C. Through the cross-bar C rods 0* pass. The upper ends of these rods have gear-wheels C C. 0 is a gear-wheel engaging with the gears C 0 and is actuated by the hand-wheel C The lower ends of the rods C C (see Fig. 6) are screwed into cross-bars 0. Each of the cross-bars c has two rods, 0 c, which in turn are attached at their lower ends to a crossbar, 0 Between the cross-bar c and the top of the cylinder G I placea compressed spring, 8 5 0 The lower ends of the cylinders C are attached to cross-bar C which is connected to the foot-lever C by means of a pin, C and block C The foot-lever C is pivoted to the frame at 0 Fig. 2, and has a counter-weight, C The intensity of the spring 0 may be adjusted by turning the rods C so as to compress it more or less. (See Fig. 6.) The springs 0 have no effect on the frame O or through it 011 theleveling-roller B except when the footlever C is brought down. Then the pressure exerted by the operator on the leveling-roller B will be governed by the expansive force of the springs which may be lessened or.

increased by turning the rods C by means of the hand-wheel 0 as has been set forth.

The shoe to be operated upon is mounted I on the jack K and toe-support K Figs. 1

bracket E and bolt E to the lower part, E

of the frame H H 1-H) and the screw-shaft E The screw-shaft E E is supported at its upper end in a laterally-sliding housing, D mounted on the rod D (see Figs. 2 and 3,) and is driven by the friction-cone D which is made to engage either with the friction-cone D or D by the operator, as he may wish to turn in one direction or the other.

The device for causing the friction-cone D to engage either with the friction-cone D or D consists in a link, D, Fig. 3, a bent lever, D, pivoted to the frame of the machine at D a link, D", pivoted to the bent lever D at D", and to the hand-lever D at D (see Figs. 2 and 3,) the whole being operated by the handlever D it being provided with a handle, as shown at D, Fig. 2.

It may be understood from the above that as the screw-shaft E F. rotates in one direction the screw-nut E will cause the entire frame H H H together with the jack-frame K and jack and shoe, to oscillate in a corresponding direction-that is, in the direction indicated by the arrow in Fig. '7, or opposite to it, as the case may be-and that the rotation of the shaft E E is caused by the action of one of the friction-cones D or D on the friction-cone D To prevent the screw-shaft E E from moving the frame H H H too far, I have an automatic shipping device for acting on the slidinghousing D and so moving it as to move the friction-cone D into the position shown in Fig. 3, in which it touches neither of the driving friction-cones D D. This device consists of a rod, L, attached to the frame H H H at L, and having on it two stops, LQL, which are so located in relation to an arm, D, on the rod D that when the frame H H H has oscillated as far in either direction as it is desirable to have it then one or the otherof the stops L L will come in contact with the arm D of the rod D and cause it (acting through the bent lever D link D and housing D to move the frictioncone D out of contact with either of the driving friction-cones D or D,and thus stop all further movement of the frame H H H The lever D that operates the shipping rod D (see Fig. 4,) is so connected with an automatic spring device that it will, when not actuated by the operator, stand in such a pcsition as to keep the friction-cone D out of contact with the driving friction-cones D and D. h This device consists of a flat plate, M, Fig. 4, which is pressed by a strong spring, M in a case, A attached to the frame of the machine against the flat end or bottom of the lever, so that the whole tendency of the spring M is to keep the shipping-lever D in its normal position. The pin D upon which the lever D swings is fixed in the frame.

To prevent injury to the power-oscillating device of the frame H H H I place on the screw-shaft E E a spring-bunter, E", Fig. 2, guided by two rods, e 6, connected to the plate E the bunter E being made yielding by the spring 6.

The downward limit of the field of action of the leveling-roller B is determined by the adjustable head-block N, Fig. 1, which serves as a stop or resting-point for the boss N on the frame O, and as the frame 0 limits and controls the field of action of the roller B it is evident that theposition of the headblock N determines the plane of action of the roller B The head-block N is fixed to the top of the standard N, Fig. 1, by being screwed onto it like a nut, and is held firmly by a check-nut, N The standard Nis made fast to the frame A by the bolt N.

In Fig. 7 the position of the shoe and the line of motion which is given to it by the 0scillating frame H H H is illustrated by the curved line 1' 7", indicating the path of the sole of the shoe-that is, the shoemove-s in an arc, the center of which is at H -so that the leveling-roller B" exerts almost the same pressure on all parts of the sole, the pressure being the same at the shank and toe and but slightly increased on the ball. The extreme lowest plane that the leveling-roll B can work in is determined by the position of the adjustable head-block N, which should be so set as to admit of the leveling-roller B to fall but a trifle below the surface of the sole as it passes off from the toe, and to again pass onto the sole without abruptly coming in contact with the end of the sole. This device for controlling the line of motion of the sole of the shoe and the plane of action of the levelingroller B insures an even pressure on all parts of the sole, and efiectually guards against injury to the'toe of the sole as the leveling-roller passes onto it or off from it.

I am aware of the patents to Othniel Gil more, dated October 24, 1882, No. 266,283, and June 29, 1886, No. 344,650, and do not claim anything therein disclosed.

I claim 1. In a shoe-sole-levelin g machine, the combination of a jack for holding the shoe and adapted to oscillate in a path the line of which lies in a circular arc coinciding practically with the arc of the sole of the shoe, with a leveling-roller, B frame 0, and adjustable head-block N, substantially as described, and' for the purpose setforth.

2. In a shoe-sole-leveling machine, the comtially as described, and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in the presence of two sub- I 5- scribing Witnesses, on this 20th day of Decemher, A. D. 1888.

FREDERICK S. STRONG.

Vitnesses:

FRANK G. PARKER, MATTHEW M. BLUNT. 

